There’s more time in a hunter round for a scribe to write down judge’s comments than during a dressage test.
Judge’s feedback IS a lesson. Not necessarily a training lesson, but a lesson on how to ride to the best of your ability in the show ring, i.e. “ring craft”.
Brief comments from a judge written next to the scores can be very helpful and provide an explanation of the scores. Remarks such as “Needs more.______” (pace, brilliance, bend, etc.) or “Not straight” explain the reason for each the score.
Who wants to wonder and guess why they received a certain score ? Comments take care of that, and riders learn something.